The value of x for which the lines m and l are parallel is 31 degrees
Parallel lines
The given diagram includes two parallel lines m and l, since the line are parallel hence the sum of the angles 105 and 3x - 18 are supplementary that is;
105 + 3x - 18 = 180
Simplify for the value of x
87 + 3x = 180
3x = 180 - 87
3x = 93
x = 93/3
x = 31
Hence the value of x for which the lines m and l are parallel is 31 degrees
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